Audio Compression create a sense of “fear” to people that just start their music production journey. The most familiar questions that people ask are “what is compression, why do we need it and when should we use it”.
When you're using a limiter across a full mix, keep the reduction meter peaking at about 3-4dB at most. Any more than that, and you risk damaging the dynamics of the track and causing audible damage to the signal. You can push it much harder on individual track elements, though